538701 - When a 404 occurs or URL is mistyped I'm redirected to ask.com

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Keith vonBorstel]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)

I set keyword.url = (nothing)
I set keyword.enabled = false
It doesn't stop the problem
On restart of Firefox keyword.url is set to ask.com
and keyword.enabled = true

Reproducible: Always

Steps to Reproduce:
1.go to keithvb.com
2.click dminfo.link

Actual Results:  
A moved to new url message appear that is quickly overwritten
by the ask.com search results

Expected Results:  
should stop at moved to new url message

Comment 1

[Tyler Downer [He/Him]]

Is your ISP doing DNS error redirecting? If so, they could be directing you to a search page. This is outside of firefox's control and you need to ask to opt-out of this.

Comment 2

[Matthias Versen [:Matti]]

no answer.
It could be also caused by an installed Toolbar